As a leading global specialist for photovoltaic system technology, German company SMA is setting the standards today for the decentralized and renewable energy supply of tomorrow. More than 5,000 SMA employees in 21 countries have devoted themselves to this task.

Multicluster Boxes
for SMA Sunny Island

The power of the AC main distribution unit for Sunny Island systems has been increased by 20 %. This allows off-grid and hybrid systems in the power ranges of 20 to 300 kW to be implemented even more cost-effectively. The specific costs for the overall system are being reduced thanks to a maximum PV output of 360 kW and the flexible design capability of the Sunny Island 6.0H / 8.0H. Based on proven technology, 2 to 12 three-phase clusters, each consisting of 3 Sunny Island inverters, can be connected in parallel. To simplify installation, all Multicluster Boxes are completely wired and fitted at the factory and have a main connector for generators, the load distribution and PV or wind turbine systems.

Multicluster Boxes for SMA Sunny Island

Easy Set-Up Of Stand-Alone & Hybrid Systems

All data cables required for the installation are included in the delivery. With the Multicluster solution for Sunny Island, you really have thought of everything. Even complex energy supply solutions are easy to implement.


  • Three different power classes, from 20 kW to 300 kW.

  • Different generators, PV and load magnitudes.


  • Integrated AC distribution for Sunny Island, generator, PV.
  • Integrated load-shedding contactor.
Multicluster Boxes for SMA Sunny Island in Melbourne VIC
Multicluster Boxes for SMA Sunny Island


  • Automatic bypass for the PV generator.

  • Active Anti-Islanding.

  • Reverse current monitoring.


  • High protection class IP65 (MC-Box-6.3-11).

  • High protection class IP54 (MC-Box-12.3 / MC-Box-36.3-11).

  • 5-year SMA warranty.